Socket plug



Nov. 14-, 1933. c PRESUTTI 1,935,278

SOCKET PLUG Filed se i. 23 1925 WITNESS I ATTORNEY Patented Nov. 14,1933 STATES SOCKET PLUG Charles Panfilo Presutti, Newburgh, N. Y.

Application September 23, 1929 Serial No. 394,721

1 Claim.

This invention relates to socket plugs for electric circuits, an objectbeing to provide a male plug member which is connected and arranged sothat the conductor wires when released, will be separated, and shortcircuiting of the plug will thus be prevented.

Another object of the invention is the provision of a novel form ofcontact element by means of which strain upon the wire at the terminalcontacts will be relieved, so that danger of a broken or poor connectionat these points will be practically eliminated.

With the above and other objects in view, the invention further includesthe following novel features and details of construction, to behereinafter more fully described, illustrated in the accompanyingdrawing and pointed out in the appended claim.

In the drawing:.-

Figure 1 is a sectional view of the invention.

Figure 2 is an inner end view.

Figure 3 is a sectional view at rightangles to Figure 1. I

Figure 4 is an edge view of one of the contact elements.

Figure 5 is a perspective view of the same illustrating the manner ofsecuring the conductor wire to said element.

Referring to the drawing in detail wherein like characters of referencedenote corresponding parts, the reference character indicates the bodyof the male member of a socket plug. This member is formed of insulatingmaterial and is preferably shaped as shown. 35 The inner end of the malemember 10 is provided with a recess 11 and extending from this recess isa socket 12 with which communicates the inner ends of openings orpassages 13. These openings or passages 13 receive conductor wires 14which extend into the recess 11 for connection with terminal plates 15.

The plates 15 are of like construction and have extending from one end aheaded anchor stud 16 which is embedded in the body 10 as shown in 45Figure 2 of the drawing. Extending from the plate 15 is a blade 1'?which may be removably positioned within the female member (not shown)01! the plug. The plate15 carries a terminal screw 18 which providesmeans for attaching the inner ends of the conductor wires 14.

In order to relieve strain at the inner or attached ends of the wires 14so as to prevent loose terminal connection 18 will not be subjected tostrain by a. pull upon the conductor wires.

Extending into the socket 12 is a projecting portion 22 which isarranged between and separates the ends of the conductor wires 14, sothat in the event of disconnection, danger of short circuiting throughcontact between these wires will be prevented. The openings 13 extendinward and are inclined relatively, and the recess 12 pro-- vides anenlarged outlet at the inner ends of these openings for theaccommodation of the hooks 19 and the knotted portions of the conductorwires.

The invention is susceptible of various changes in its form, proportionsand minor details of construction and the right is herein reserved tomake such changes as properly fall within the scope of the appendedclaim.

Having described the invention what is claimed A socket plug comprisinga body having a recess in one end terminating into a chamber, aprojection located centrally of the chamber and terminating short of therecess, plates abutting the inner wall of the recess and projectinglaterally across the mouth of the chamber and spaced from each other,headed pins carried by the plates and embedded in the body, contactblades on the plates and extending outwardly of the recess, said bodyhaving conductor passages extending therethrough and communicating withthe chamber at opposite sides of the projection, and hook shapedelements formed on one end of said plates and extending into the chamberon opposite sides or the projection and in the opposite direction to thecontact blades and adapted to have conductors after passing through thepassages wrapped and knotted thereabout to relieve strain on theelectrical connections between the conductors and plates.

CHARLES PANFILO PRESUTTI.

or broken contacts, the plates 15 have extending from their ends, hooks19. The wires 14 are en-

